Assessing the Limits of eLoran Positioning Accuracy

• Autorzy: Safar J. , Vejrazka F. , Williams P.
• Języki publikacji: EN

Abstrakty

EN

Enhanced Loran (eLoran) is the latest in the longstanding and proven series of low frequency, LOng-RAnge Navigation systems. eLoran evolved from Loran-C in response to the 2001 Volpe Report on GPS vulnerability. The next generation of the Loran systems, eLoran, improves upon Loran-C through en-hancements in equipment, transmitted signal, and operating procedures. The improvements allow eLoran to provide better performance and additional services when compared to Loran-C, and enable eLoran to serve as a backup to satellite navigation in many important applications. The Czech Technical University in Prague (CTU) participates in the eLoran research activities coordinated by the General Lighthouse Authorities of the United Kingdom and Ireland (GLAs). In our work we have focused on questions that arise when considering introducing new eLoran stations into an existing network. In particular, this paper explores the issue of Cross-Rate Interference (CRI) among eLoran transmissions and possible ways of its mitigation at the receiver end. An eLoran receiver performance model is presented and validated using an experimental eLoran signal simu-lator developed by a joint effort of CTU and GLAs. The resulting model is used to evaluate the achievable positioning accuracy of eLoran over the British Isles.

Słowa kluczowe

EN

positioning accuracy; positioning system; White Gaussian Noise; Positioning, Navigation and Timing

• Wydawca: Faculty of Navigation, Gdynia Maritime University
• Czasopismo: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
• Rocznik: 2011
• Tom: Vol. 5, no. 1
• Strony: 93--101
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Safar J.

• The Czech Technical University, Prague

autor

Vejrazka F.

• The Czech Technical University, Prague

autor

Williams P.

• The General Lighthouse Authorities of the United Kingdom and Ireland

Bibliografia

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• [7] Pelgrum, W. 2005. Noise - from a receiver perspective. In Proceedings of the 34th Annual Convention and Technical Symposium of the International Loran Association.
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• [9] Safar, J. et al. 2009. Cross-rate interference and implications for core eLoran service provision. In Proceedings of the International Loran Association 38th Annual Meeting, Port-land ME.
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